CALEI -JAC

[billy breach]

Hi I'm making my first featherweight robot called CALEI-JAC. Here is the rough basic drawings to give an idea of what it'll look like.

Power: 2 x 12v drill motors on 18.4v lipos
100mm blue wheels with rubber tuyres attached for extra grip
electric lifter power - 18.v lipo bat powering a drill motor
base plate 3mm aluminium
sides 20-25mm hdpe
top 3mm



and

[billy breach]

Re: CALEI -JAC

[billy breach]

Re: CALEI -JAC

[billy breach]

Re: CALEI -JAC

500x500x3mm aluminium base. 20mm hdpe motor mounts bolted down using m6 countersunk bolts with nylon nuts.

[Ellis]

Re: CALEI -JAC

Looking good mate. It would be nice to see a lifter as against to a flipper in the arena! Good luck.

[ewan]

Re: CALEI -JAC

Looking good, like the look of the front of the lifter arm (scoop). Check my message about boosting lift speed in the lifter thread!

[PJ-27]

Re: CALEI -JAC

500 x 500 is quite large for a FW.

Bitza was 450 x 320 and when we went to the UK champs we found we dwarfed most of the other bots! (besides Tron2/Seraph of course)

This is fine, but you'll find you'll suffer from the scaling factor and your robot will become very heavy very quickly.

Bigger base means more armour, more supports, more cabling etc.....

[billy breach]

Re: CALEI -JAC

Thanks ill have a look at that thread. I wanted the wheels to be protected so I found that 500mm wide is just about right but ill have a look at the length. Whats the biggest feather about just now?

[PJ-27]

Re: CALEI -JAC

Seraph and Tron2.

http://www.youtube.com/watch?v=QkNhiKdkhno

Seraph is the thing with the massive wheels! And Bitza is opposite the camera with the St. Georges Flag on the scoop.

Tron2 is much like Seraph.

Considering they all weigh 13.6kg it's surprising what you can fit in! Check out 540, Bonx and Satanix for really compact machines.

http://www.youtube.com/watch?v=IvPACmkn41c

http://www.youtube.com/watch?v=MIIs_AUh7uQ

http://www.youtube.com/watch?v=fCLlZCZ3V6M

Obviously what size you make your robot is up to you, but we really struggled to get Bitza in weight come the end of the build.

[billy breach]

Re: CALEI -JAC

Yeah I took heed of what you are all saying. The bots size is now 500mm (wide) x 350mm (length). Also I have scrapped the dewalt xrp drill. FAR TOO HEAVY!!!!!! down to regular 9.6v drill motor for the lifter, which will be over volted.

Thanks for the links to the videos.....some cracking looking bots there.

[billy breach]

Re: CALEI -JAC

photo of the base cut down, 500mm wide x 340mm long

[billy breach]

Re: CALEI -JAC

my robo challenge motors and wheels came today.....so work begins...!







I soldered 14 awg wire to the motors with some hot glue to support the soldered joint. Fitted the classic blue wheels, I still have to screw an old rubber bike tyre to the blue wheels (100mm blue wheels) for extra grip. 20mm hdpe provide the mounts. Two rollers for the back of the bot, to help slide around.

[PJ-27]

Re: CALEI -JAC

Looks very neat!

Good idea on the glue front, the tabs on those drill motors snap off very easily, and given the emmense forces your robot will be subject it would be likely for them to break

Also those B&Q drills are terrible! Bought a couple for old Bitza and they started breaking just from working the gearboxes in. All I was doing was holding the trigger down!
Long story short they lasted ONE event.
The Argos drills are much better, but still not great.

[billy breach]

Re: CALEI -JAC

I got the drills from robo challenge not sure what type of drills they are. After soldering the new wires on I thought they were weak so hunners off glue should hopefully do the trick.

[ewan]

Re: CALEI -JAC

Looking good